After Kim Kardashian defended her little bro Rob against public attacks from his ex-girlfriend Adrienne Bailon, now Khloé has come forward with a perfectly succinct subtweet. "FDB," she deadpanned Wednesday. For those of you without access to Urban Dictionary, that translates to "fuck dat bitch." Rob totally RT'ed, because as good as a Frozen reference from Kim is, nothing puts the fear of God in an enemy like the wrath of Khloé "The Best One" Kardashian.